3. A sound wave has a frequency of 250 Hz in air. What is its wavelength in water? while tuning his violin, the violinist compares the pitch his string produces to the plen Produced by an electronic tuner. If the tuner produces a note with a frequency of 440 112 and Piolin plays a note with a frequency of 443 Hz, what is the beat frequency produced 7 . - 4. On a graph of displacement versus force for an elastic spring, the of the graph is equal to the spring constant for that spring. occurs when two or more waves move through a medium at the same time, c. interference refraction 8. Two instruments are playing so that the beat frequency between them is 4 Hz. If one of them is d. resonance playing a frequency of 349 HZ, what are the possible frequencies the other instrument is playing? reflection What is the ith 6. Any motion that repeats in a regular cycle is known as motion. 0.2 01 transverse c. simple harmonic wave d. periodic 9. The speed of sound at room temperature (20.C) is 343 m/s. If the speed of sound in air increases about 0.60 m/s for every 1 C increase, what is the speed of sound when the temperature is 45.C